It should be pójść in all the sentences of 5.F.11.
Also the first sentence in 5.F.11 is grammatically OK, but the word order sounds a bit unnatural for me for some reason. I would say it as żeby wczoraj pójść na film or żeby pójść wczoraj na film. Or preferably I’d change the meaning a little bit and move the adverb to the first clause: Byłem wczoraj zbyt zmęczony, żeby pójść na film.
EDIT: Oh, and in the final sentence na zajęcia, one uses the word zajęcia, I think, only in plural in the meaning of ‘classes’. Zajęcie is a proper singular for an ‘activity’ though, but you wouldn’t iść na zajęcie.
Last edited by silmeth
on 2019-01-17, 19:51, edited 2 times in total.